C8051F321 Silicon Laboratories Inc, C8051F321 Datasheet - Page 192

• Manufacturer Part Number: C8051F321
• Description: IC 8051 MCU 16K FLASH 28MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F32xr

Specifications of C8051F321

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 21
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

C8051F320/1
192
0100
0101
0010
0010
0001
0000
VALUES READ
0
0
0
0
1
1
0
1
0
0
1
1
X
0
0
1
0
1
1
1
0
1
0
1
X
X
X
X
X
X
X
X
X
X
0
1
CURRENT SMBUS STATE
A slave byte was transmitted; NACK
received.
A slave byte was transmitted; ACK
received.
A Slave byte was transmitted; error
detected.
A STOP was detected while an
addressed Slave Transmitter.
A slave address was received; ACK
requested.
Lost arbitration as master; slave
address received; ACK requested.
Lost arbitration while attempting a
repeated START.
Lost arbitration while attempting a
STOP.
A STOP was detected while an
addressed slave receiver.
Lost arbitration due to a detected
STOP.
A slave byte was received; ACK
requested.
Lost arbitration while transmitting a
data byte as master.
Table 16.4. SMBus Status Decoding
Rev. 1.1
TYPICAL RESPONSE
OPTIONS
No action required (expecting
STOP condition).
Load SMB0DAT with next data
byte to transmit.
No action required (expecting
Master to end transfer).
No action required (transfer
complete).
Acknowledge received address.
Do not acknowledge received
address.
Acknowledge received address.
Do not acknowledge received
address.
Reschedule failed transfer; do
not acknowledge received
address.
Abort failed transfer.
Reschedule failed transfer.
No action required (transfer
complete/aborted).
No action required (transfer
complete).
Abort transfer.
Reschedule failed transfer.
Acknowledge received byte;
Read SMB0DAT.
Do not acknowledge received
byte.
Abort failed transfer.
Reschedule failed transfer.
WRITTEN
0
0
0
0
0
0
0
0
1
0
1
0
0
0
1
0
0
0
1
VALUES
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
X
X
X
X
X
X
X
X
X
1
0
1
0
0
0
1
0
0
0